Electrochemical Investigations Of The Functionalization Of Au Nanoparticles And Planner Bilayer Lipid Membrane

The 21st Century is a period of challenge and significance for human being. It is emerging a new industrial revolution tide. In this tide, the nanotechnology will become one of leading technologies, together with the environment technology and the life science. The preparation and study of nano-scaled assembled structures are immensely attractive and rapidly expanding area.In our experiment, the functionalized gold nanoparticles were used to construct ordered electrochemical interfaces. Properties of the ordered electrochemical interfaces of metal nanoparticles were explored in determining some biological substances. This dissertation consists offollowing four parts:The first part gave a general introduction of the preparations of nanomaterials, the surface-modification and functionalization of gold nanoparticles, strategies to construct ordered electrochemical interfaces and their potential applications.The second chapter synthesized golden nanoparticles with the cysteine wraps in the homogeneous phase. The Au nanoparticle so synthesized could be skived to nanoparticle/ion sol ion liquid at room temperature. The gold nanoparticle/ion sol electrode revealed a stable and sensitive electrochemical response to the oxidation of.The gold nanoparticles film can be used as a detector for dopamine.The third part prepared a composite electrode, which was modified with L-Cys /GN membrane, using the strong reciprocity of Au-S, Pt-N. The modified electrod gave the obviously at electrochemical catalytic effection on the oxidation of amino acid, also gave the advanced capability of this electrode.The final paper in this dissertation, a kind of didodecyldime-thylammonium bromide (a synthetic lipid) layer membranes was supported on a glassy carbon electrode. The ion channel behavior of the supported bilayer lipid membrane was studied by scanning electrochemical microscopy (SCEM). The study of ion channel behavior of bilayers or biomemberanes is an exciting field. In the study of biological activities, the BLM which was an ideal model could be used to make biology sensors.